NefMoto

I can`t get this clear for me.
Which table/tables would consider VE in Me7, and how too improve it?

There are many, many, many tables which depend on VE.

BTW changing those tables does not change the VE.

BTW changing those tables does not change the VE.
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I know that VE is beeing changed by hardware.
Can you be more specific about which tables?

Depends on what you are trying to fix. Going through every table that has to be altered depending on VE would be a monumental task.

I am not fixing anything.
I just want to know, what, why, how.....

Singularly most important map that can tell you what kind of efficiency engine is given NWS state and RPMs is map KFURL, it is used in conversion of air mass (PS, PS_W) to load (RL, RL_W) as visible in loggers and used through ME7. RL/RL_W is then naturally used downstream for everything.

Alright, thanx Julex, I will look into this.

To what end? Small changes in VE aren't going to change the tune much; it will only screw up your req boost *even if you get it right* if you are targeting max power, and throw off the PID. rl is only used as a reference everywhere else, even if it is "wrong" you have to retune ALL the places where rl is used anyway.

Learning and understanding.

VE determines how much air mass is flowing through the motor for a given intake manifold pressure and RPM. Or the other way around: how much pressure is required to move a certain amount of air mass through the motor.

Anywhere those calculations need to be done, VE is required.

VE in ME7 is not used like it would be used in a standalone ECU.
The maps most related to VE are KFPBRK, KFPBRKNW, KFPRG, KFURL.

But technically you almost never need to change them. The most important part in ME7 is to have msdk_w and mshfm_w be as equal as possible, and make sure that ps_w is not much smaller than pvdk_w, otherwise you get into other sorts of trouble.

I have noticed that reading a book on standalones. That's what made me interested of finding out and understanding it in our ECUs.
Thanx for the info boys!!

Or the other way around, if pvdk_w is near the ECU pressure limit and you aren't running the 5120 hack.

Don't recommend it. Underscaling and messing with scaling results in lots of weirdness in load prediction and other code.

if ps_w is near the pressure limit you have no choice but to underscale, or run the 5120 hack.

My 1.8t is displaced to 2L.
I changed KUMSRL and KISRM by calculating and i changed KFURL to make my ps_w follow my rl_w. What i dont unterstand is the Part in the FR were the msdk_w should follow mshfm_w.
Is KFPRG the map to change?

I belive it is TB maps. WDKUGND, KFWDKMSN. KFMSNWDK

http://nefariousmotorsports.com/forum/index.php?topic=5238.msg49915#msg49915

Hmm makes sense maybe.... Will try tomorrow.

MAF and Throttlebody is original S3. Just displacement changed. So maybe this is not the right map to change.  ???

Do please and post your results.

I found my ps_w lined up nice with pvdk_w once I replaced the inlet manifold, so remember not all s/w :)

But my inlet is stock too

Might be worth spraying carb cleaner around the gaskets etc.  Just a thought.

I tried to modify the last row of wdkmsn and msnwdk but this didnt change anything.
I changed WDKUGDN from 3000rpm up to the last row and this changed my massairflowatthrottleplate

was this the right map to go with, idk  :-X

It sure is :)  Great.
How did you expirience the difference Before and after besides the log ofcourse?

nothing chanced, feels like the same before and after

It should not either. If your Maf failed and you hade not calibrate it as you did. Car would run like shit is my guess.

Not correct.
Look at the fast path flow equalization routines. fkmsdk and so on.

Not active in all softwares, but it is something that will catch you out really badly at some point if you do not do things right.

Also, throttle control is better with correct maps. So ECU knows when to go WOT.

Ok, thanx for explanation.
I will look into this.

Okay i changed WDKUGDN and it worked but you told me it is wrong. In another thread you wrote to change WDKUGDN.
http://nefariousmotorsports.com/forum/index.php?topic=4381.msg72257#msg72257

Now im confused even more.

Mocke are you from the "stand alone" world and want to know where to tune VE? didnt quite understand.

No man. I was reading a book about stand alone tuning back then bofore i got better understanding of Me7.

WDKUGDN is the correct map to change. If your throttle maps are already correct for the throttle you are using (copy paste them from original software for that throttle if you are using a different throttle).